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https://issues.apache.org/jira/browse/HDFS-12681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16262341#comment-16262341
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Steve Loughran commented on HDFS-12681:
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It's nice to see the builder pattern here. I've been doing some stuff with
subclasses of FileStatus recently and it's not great for subclassing.
> Make HdfsLocatedFileStatus a subtype of LocatedFileStatus
> ---------------------------------------------------------
>
> Key: HDFS-12681
> URL: https://issues.apache.org/jira/browse/HDFS-12681
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Chris Douglas
> Assignee: Chris Douglas
> Priority: Minor
> Attachments: HDFS-12681.00.patch, HDFS-12681.01.patch,
> HDFS-12681.02.patch, HDFS-12681.03.patch, HDFS-12681.04.patch,
> HDFS-12681.05.patch, HDFS-12681.06.patch, HDFS-12681.07.patch,
> HDFS-12681.08.patch, HDFS-12681.09.patch, HDFS-12681.10.patch,
> HDFS-12681.11.patch, HDFS-12681.12.patch, HDFS-12681.13.patch
>
>
> {{HdfsLocatedFileStatus}} is a subtype of {{HdfsFileStatus}}, but not of
> {{LocatedFileStatus}}. Conversion requires copying common fields and shedding
> unknown data. It would be cleaner and sufficient for {{HdfsFileStatus}} to
> extend {{LocatedFileStatus}}.
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